code: def test_constructor_dtype_str(self):
      result = SparseArray([1, 2, 3], dtype="int")
      expected = SparseArray([1, 2, 3], dtype=int)
      tm.assert_sp_array_equal(result, expected)
  
imports: import numpy
  import pytest
  from pandas._libs.sparse import IntIndex
  import pandas
  from pandas import SparseDtype, isna
  import pandas._testing
  from pandas.core.arrays.sparse import SparseArray
label_desc: Use image node_id 2 for calling the TestConstructors obj's underlying member method code with example usage: obj.test_constructor_dtype_str() without return types